Canon has just filed a new patent of EF-S 9-20mm F/4.5-5.6 IS Lens. This new lens is a wide-angle zoom lens for Canon APS-C DSLRs.
Patent Publication No. 2015-31869
- Published 2015.2.16
- Filing date 2013.8.5
Example 1
- Focal length 9.50 14.52 19.70
- F-number 4.64 5.21 5.80
- Half angle (in degrees) 55.17 43.26 34.74
- Image height 13.66
- Overall length of the lens 143.95 134.71 134.11
- BF 38.00 47.58 56.42
Source: EG
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